18 Years Worth of Days The average retirement lasts for 18 years. Are you prepared to fill that many days? Share | Related Content Should You Ever Retire? A growing number of Americans are pushing back the age at which they plan to retire. Or deciding not to retire at all. Whole Life: The Key to Unlocking your Retirement Imagine a retirement without having to worry about money? Well, it’s possible. Retirement Plan Distributions There are a number of ways to withdraw money from a qualified retirement plan.